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Innocent Eteng

last updated Fri, Jun 3, 2022 5:56 PM

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How AI-Powered Warning System Helps Pastoralists In The Sahel Become Climate-Resilient, Avoid Food Insecurity

By Innocent Eteng
| Updated 17:56 03/06/2022
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In the Sahel region of Africa, there are very short rainy seasons (three months maximum) and extremely long dry times that could stretch to about nine to 10 months every year. No thanks to climate change; it is a new reality. And no one feels the impact like pastoralist communities in the region.

During these dry seasons, pastoralists travel long distances by foot with their cattle, searching for scarce pasture and water for their animals. As a result, they are becoming more vulnerable. And their conditions are worsening as the trio of COVID-19, global food crisis, and lack of access to information breed more uncertainties for them.

Over 300 million people inhabit the Sahel region. Of those, about 60% are crop farmers and pastoralists. With livestock farming making up 40% of the region's total GDP, vulnerabilities and uncertainties for pastoralists could lead to food insecurity and other economic and environmental consequences.

A new early warning system provides solution

To help herders overcome these vulnerabilities and uncertainties, become more climate-resilient and precise in their decision-making, avoid food insecurity, and grow profit, Action Against Hunger, an international humanitarian organisation, created Pastoral Early Warning System or PEWS. This system allows pastoralists to receive and use artificial intelligence (AI)-powered data to guide their activities.

How it works

PEWS uses AI to process satellite imagery collected by the European Space Agency, mapping out areas with much vegetation and water resources. It also maps locations with depleted vegetation and water. 

PEWS also recruits community members to collect information such as local market prices for livestock feed, the prevalence of various animal diseases, bushfires, heatwaves, and cases of insecurity. 

These data and information are then collated and shared with pastoralists [sometimes in the form of maps] through radio, SMS bulletins and an online dashboard.

It helps herders know exactly where vegetation and water supply are in abundance to take their cattle. They also know areas with depleted vegetation and other early warning signals to avoid, ensuring their safety and food security and removing the guesswork from the activities.

Action Against Hunger initially launched the innovation in Mali and Niger in 2007. But it has since expanded to the other nine countries in the Sahel: Burkina Faso, Gambia, Mauritania, Senegal, Benin, Ivory Coast, Nigeria, Chad, and Togo.

Cedric Bernard, Action Against Hunger's Food, Security and Livelihood West and Central Africa Regional Advisor, told Prime Progress (via email) that in the central Sahel countries of Mali, Niger and Burkina Faso alone, PEWS has reached about 2.6 million herders and smallholders.

Asked what the future expectations are, the agro-economist said the nonprofit envisages the institutionalisation of the project. It wants the programme managed in the future by herders-run groups in collaboration with state-run ministries.

"In 10 years from now, we expect the system to be managed by herders' organisations (CSOs or civil society organisations) in partnership with the technical departments of national ministries. The two pillars of the institutionalisation process are contributing to this," he said. 

Explaining the two pillars, he said: "(1) We expect a younger generation of herders to use digital applications for real-time navigation and mobility. (2) We expect the accessibility of online training on climate adaptation and agroecological practices to be further developed and widely used by pastoral communities."

But several limitations are hindering the expansion of the system.

"The extension of insecurity areas in the Sahel and Western Africa puts populations at risk. It limits data collectors' ability to contribute freely (individual danger but also [the] destruction of communication infrastructures) and our capacity to conduct necessary participatory mapping of territories and identification of key surveillance spots," Bernard acknowledged.

Poor or zero access to public data to map out pastoral infrastructure in the region is another challenge. "The data exist but are not shared with Civil Society Organisations, which strongly limits their usefulness," he lamented.

In Nigeria, for example, Bernard said, "We do not have figures or data because there is no system of field data collection or data dissemination in place. We only produce a near real-time monitoring of biomass production. We recently have had exchanges with Nigeria because there is [a] big interest for the PEWS."

And there is a third challenge. It involves the difficulty in consolidating and extending the network of field data collectors because the program is maintained through "short-term limited grants."

Bernard said the network extension is necessary to "Increase the density in current areas to cover all areas of pastoral interests and extend the system to new areas in the same countries and neighbouring ones." However, Action Against Hunger still hopes that "we will be able to mobilise resources to implement the system in [Nigeria]" and other countries.

Pastoral Early Warning System PEWS Sahel Region Africa Action Against Hunger

About the author

Innocent Eteng

Innocent Eteng has worked as a solutions-focused journalist for over four years. His reporting has been published by several foreign outlets, including Yes! Magazine, TRT World, The Christian Science Monitor, Women's Media Center, Religion Unplugged, Bhekisisa, and BusinessDay Media.

Innocent is currently a journalist fellow with the Center for Religion and Civic Culture (a research center at the University of Southern California) and a 2021 LEDE fellow with the Solutions Journalism Network.


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